The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 24, 2010
Filed:
Jan. 18, 2007
Applicants:
Andreas Karl Roelofs, Pittsburgh, PA (US);
Martin Gerard Forrester, Murrysville, PA (US);
Inventors:
Andreas Karl Roelofs, Pittsburgh, PA (US);
Martin Gerard Forrester, Murrysville, PA (US);
Assignee:
Seagate Technology LLC, Scotts Valley, CA (US);
Primary Examiner:
Int. Cl.
CPC ...
G11B 9/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
Ferroelectric media includes a media surface that is scannable by a contact. The contact provides a read signal. A polarization pattern is written in first regions of the media surface. The polarization pattern represents position data. The first regions are selectively exposed to an energy source. The exposing provides an imprint to the polarization pattern that prevents subsequent erasure by the read signal.